May I insert a practical subject into this news group which
frequently discusses SWRs, the speed of electromagnetic
propagation and other exotica?
Ever see those adverts where a hefty guy wearing construction
Safety Helmet is hanging from one little spot of 'Krazy Glue'
from a steel beam?
Last winter I broke a very nice 8 inch (straight glass not an egg
shell) insulator into two almost equal pieces. :-(
A 'clean' break in the ribbed section, no lost pieces or chips of
glass, the broken two pieces mated perfectly.
So a couple of days ago I 'glued' it with Crazy Glue; one of
those cyano-cryolate (sp?); or whatever the proper name is!. Used
a generous but not too overflowing amount.
At house temp. it 'seems' to have made a very strong join. And,
holding it, so almost, did my fingers when the vapour from the
glue seemed to flow away from the join and collect on them!
However I've escaped.
Whether I will use it again I'm not sure; probably can't depend
on it.
But I thought I might set up a test jig; by hanging from it a
plywood platform a few inches above the ground and loading that
with concrete blocks/bricks etc.
Any ideas comments what the 'strength' of an unbroken one would
be. That is to say what would be a 'normal loading for an
insulator of this type. I've seen pictures of wire antennas with
incredible loads of, say, ice, on them. And often something will
break; but those glass insulators look incredibly strong, unless
you drop one as I did.
Regards. Terry.
A few miles from where, in 1901, Marconi received the first
Transatlantic wireless telegraph signal.